Abrading machine work support



Jan. 9, 1945. E. THoMPsoN ABRADING MACHINE WORK SUPPORT Original Filed March 12, 1943 5 Sheets-Sheet 1 Q www l Thom/"050m Jan. 9, 1945. L. E. THOMPSON ABRADING MACHINE WO-K SUPPORT Original Filed March l2, 1943 5 Sheets-Sheet 2 LT/zom/vaon Jan. 9, 1945. L E THQMPSQN 2,367,156

ABRADING MACHINE WORK SUPPORT Original Filed March l2, 1943 5 Sheets-Sheet 3 Jan. 9, 1945. 1 E. THOMPSON ABRADING MACHI'NE woRK SUPPORT original Filed March 12, 194sl 5 sheeis-shei s.

`Patented Jan. 9, 1945 I UNITED j STATES PATENT OFFICE a ABRADING WORK SUPPORT Loren Thompson, Parkersburg, W. Va. originar-application March .12, 194s, serial No. 478,925'. Divided yand thisv application September 16, 194s. serislNo. 502,667 b raisins. (cien-233) E Y* saddle I3, the details of which are more specili- This invention relates to abrading machines and more' particularly to a work supporty or carriage, and is a division of my copending applicationSerial Number 478,925 led for Abrading apparatus; E

An object of this invention is to provide a reciprocal work supportor carriage which is so constructed and arranged that a maximum movef ment may be obtained within a minimum amount connected to a central portion-of thefvvork;sup-rr port or carriage.

The invention consists of Ithe novel construction, combination and arrangementof parts as' will be more specifically referred'to and illus-i tratedv in theaccompanying drawings whereinA is shown anv embodiment of the invention, but it is y to be understood that variations, lmodiiications and changes may be resorted 'to which fall vWithin the scope of the invention as claimed.l f

AIn the drawings: l

f Figure 1 is a fragmentary an abrading machine embodying a work support constructed according to an embodiment of this invention, f 1

Figure 2. is a the machine,

rFigure 3 is a longitudinal section partly inde- Maren 12, `1943 fragmentary side elevation of" cally set forth in my vcopending application supra.

'The saddle I3 is adapted to have movement at right angles to the face of the abrader I2 so as to move the work support to be hereinafter described toward or away from the abrading mem ber.

to be tilted or rocked in the seat I5 and locked in the adjusted position to dispose the work support yon the desired angle with respectto the working kface of the'abrader I2. I

The cradle or base I4 is formedwith a flat upper side II and is also'formed with a keyway orguide I8 of substantially truncated V-shaped conguration. A work Support generally desig y nated` as I9 is'adapted to slidably engage on the Afront elevation` -of i base or cradle I4.. The Work support I9 includes a substantially rectangular-body 20 of elongated .configuration which is formed with a key-shaped slide 2I engaging in the keyway I8. A shim 22 is adapted to -'be interposed between oneside of the slide or key 2| and the adjacent side of the 25 is rotatably mounted in the bore 24` and is tail showing the operator for the work support,

Figure 4 is a sectional 4-4 ofFigureS,

Figure 5 isa bottomplan of the -work support. Partly broken away' ofA Figure 6 isa top-plan the work support, Figure 7 is a top plan 4of the work support, f

.Figure 8'isa fragmentary front elevationalof the vcradle or base for the work support, and

,Figure 9 is anenlarged longitudinal'sectionof the `operator for the work support. r

Referrngto the drawings, the numeral Ill designates generally a frame vstructure having mounted thereon .a rotatable abrading wheel II which is provided with an abrasive member I2. The frame structurefl has secured thereto la view taken o n the-line the cradle or base for 'adapted to abut at the opposite ends 'thereof against anti-friction thrust members 26 and 21. End plates or-heads 28 and 29 are secured tothe opposite endsof the cradle or base I4 and .close the ends of the bore 24 and the cylinder 25. --The head or end plate 28 has'connected thereto kadapted to be discharged throughthe annular v thrust members 26 and 21 into the interior of the cylinder 2 5. i

Thefcylinder 25 is formed with an elongatedv v slot 32 which. is of spiral conguration and a work support operating piston 33 is slidable in The saddle I3 has mounted thereonk a cradle or type and is formed at the opposite ends thereof with abutments 34 and 35 to engage against Vthe correlated heads or end plates and to hold the adjacent end of the piston 33 in slightly spaced relation with respect to the end plates. The piston or operator 33 has secured thereto an upwardly extending connecting member 3B. The connecting member 36 is formed at its lower end with a T-shaped lower portion 31 engaging in an inverted T-shaped passage 38 formed in the piston 33. The stem 39 of the connector 3B extends upwardly through the slot 32 and is formed integral with a slide block 40 which is substantially longer than the connecting member 39, as shown in Figure 9.

The slide block 4I) has formed integral therewith an upwardly projecting arm 4I which is adapted to engage in a recess 42 which is formed in the slide member 2l, The base or cradle 24 is formed with an elongated lengthwise extending slot 43 within which the slide member 40 is adapted to slidably engage. The slide member or key 2I, as shown in Figure 5, is preferably of hollow construction being formed with downwardly divergent side walls 44, end walls 45 and intermediate bracing walls 46. A central transverse wall 41 connects the side walls 44 together and the recess 42 is formed in the central wall 41. VThe wall or base 41 is also formed with a horizontal transversely disposed and forwardly opening passage 48 within which a pin 49 is adapted to engage.

The pin 49 is formed at its inner end with a reduced threaded stud 59 threadably engaging in a threaded socket 5I formed at the inner end of the passage 43. The pin 49 is formed at its outer end with a nut socket 52 and is adapted to extend `through an opening 53 formed in the lug or extension 4I. The body 29 of the work support I 9 is formed in the upper flat side 54 thereof with a plurality of parallel lengthwise extending T- shaped slots 55 and is also formed in the forward face 55 thereof with at least a pair of lengthwise extending T-shaped slots 51. The rear side of the work support I9 is provided with a rearwardly extending part 58 having the rear side 59 thereof disposed on a downwardly and outwardly inclined angle so that suii'icient clearance will be provided for the removed material to drop downwardly between the abrading face of the abrader I2 and the rear side of the work support I9. 'Ihe upper flat side 54 of the work support is also formed with a pair of transversely extending rectangular recesses 60 disposed closely adjacent the opposite ends of the support i9, as shown in Figure 6.

The cradle or base I4 is adapted to have the forward and rear sides thereof sealed by means of a pair of flexible shields 6I and G2, The shield 6I is secured as at 63 to the upper portion of the base or cradle I4 and is then wound about a spring roller 64 secured by supporting brackets 65 to the saddle I3. The shield 62 which is of flexible construction is secured as Vat 56 to the upper portion of the base or cradle I4 and is Wound about a spring roller 31 which is carried by brackets 68 secured to the saddle I3.

In the use and operation of this device, the work is adapted to be secured by headed fastening members to the upper side 54 of the support I9 in a position where the work may be engaged by the forward face of the abrader I2. The supthe cylinder 25. The piston 33 is of the oating port I9 is reciprocated back and forth with respect to the base or cradle I4 by fluid pressure in the cylinder 25. As the piston 3I moves lengthwise of the cylinder 25, the cylinder 25 will be rotated under the movement of the connecting part 39 which is secured to the piston 33. The spiral slot 32 has such a pitch that the piston 33 will prevent any fluid in the slot 33 from entering the slot 43. v Y

With a work support as hereinbefore described connected to a hydraulic operator which is entirely contained within the base or cradle I4,

it is possible to obtain a maximum movement of the work support within a limited space due to the fact that no projecting operating elements extend beyond the ends of the base I4. In addition to this, by providing the hydraulic operator, there will not be the usual wear on the operator as is the case with threaded operators or geared operators.

It will be understood that suitable valves may be interposed in the pipe lines 3l! and 3l to provide for the necessary reciprocation of the support I9 and such valves may be regulated in any suitable or well known manner.

What I claim is:

1. A reciprocall work support comprising in combination a saddle, acradle rockably carried by said saddle, a work support, means slidably mounting said support on said cradle, and means disposed entirely within said cradle and connected to said `support forr reciprocating the latter.

2. In an abradingmachine, an elongated horizontal base formed with a lengthwise slot in the upper side and a lengthwise cylindrical opening communicating with` said slot, a, reciprocal elongated work support slidably carried by said base, a rotatable cylinder in said opening and formed with an elongated spiral slot, thrust means at the opposite ends of said cylinder, a piston slidable in said cylinder,` and a connecting member extending through both of said slots connecting said piston with said work support whereby reciprocation of said pistonwill reciprocate said work support, and means discharging fluid under pressure into said cylinder at opposite ends of said piston. y

3. In an abrading machine, an elongated horizontal base formed with a lengthwise guide and a lengthwisel slot within said guide, a work support including an elongated body and a slide engaging insaid guide, said base having an elongated lengthwise opening communicating with said slot, a spirally slotted cylinder rotatable in said opening, a piston slidable in said cylinder, said piston having a T-shaped passage therein, a connecting member formed with a T-shaped lower portion iixedly mounted in said T-shaped passage and slidably engaging in said slots, a lug carried by said connecting member, said slide having a downwardly opening recess and said leg engaging in said recess, and a pin removably carried by said slide engaging said lugfor securing said lug to said slide.

4. In an abrading machine, in combination an elongated saddle formed with a transversely concave seat in the upper side thereof, a cradle formed with a convex vlower side seated in said seat, flexible spring-pressed shields connected to said saddle and said cradle, a work support slidable on said cradle, and means entirely within said 'cradle for reciprocating said work support.

LOREN E. THOMPSON. 

